Regulating and reducing adapter for sandblast machines



Nov. 13, 1915; E. c. BICK 2,388,818

REGULATING AND REDUCING ADAPTER FOR SAND BLAST MACHINES Filed Oct. 10, 1944 2 Sheets-Sheet 1 .Z DW/N CB/CK, Inventor WW M518]:

E. c. BlCK 2,388,818

REGULATING AND REDUCING ADAPTER FOR SAND BLAST MACHINES Nov. 13, 1945.

Filed Oct. 10, 1944 2 Sheets-Sheet 2 Inventor Patented Nov. 13, 1945 UNITED STATES PATENT OFFICE r REGULATING AND REDUCING AD'ArTEnFon SANDBLAST monmns Edwin Ci Bick, Los Angelcs, Calif. Application Qctohcr 10, 1944,. sesame. 55am 3' Claims. (61. 51-8) This inv ntion relates to andy blasting ma chines, and has more pa ticular ref ren e. t a

no el and imp ved tructure cha ac eriz prinipa ly bye-special adapter. to which a de iv ry hose is connected, said adapter serving to sat, isiac ri y regulate a d reduce air and s n bla ts, issuing therefrom.

In: carry out the princip es of the inventio x itisv my im to g nera ly improve upon pr or known constructions in the same category and to do through the medium f a simp e and expedient assemblage- .of; parts; all (if said partsr na ine r p oportionate funct ons n :In the, drawings, wherein like numerals are I employed to designate like parts throughout the views: I

Figure-"1 is aview partly in section and partly in elevation showing a complete assemblage constructed in accordance with the principles of the instant invention,

Figure 2 is an enlarged end elevation of the hose end of the adapter, this showing the valved air supply line and especially constructed air jet nozzles connected therewith.

Figure 3 is a fragmentary elevational View showing the adapter and associated sand and air delivery conduits connected therewith,

Figure 4 is an elevational view of the adapter per se.

Figure 5 is a horizontal fragmentary section taken approximately on the plane of the line 55 of Figure 4.

Referring now to the drawings by distinguishing reference numerals, and particularly to the general assemblage seen in Figure 1, it will be observed that the container 6 is adapted to be filled with sand 1 and therefore constitutes a supply and gravity-type delivery hopper. It has a semi-spherical bottom 8 with a discharge neck 9 and a concaved, disc-like top In with a. filler plug ll.

At the upper right in Figure 1 the numeral 12 designates the air supply pipe or 1ine, this coming from the compressor (not shown). This line is provided with a regulating and cut-off "valv I 3 of appropriat const uc It leads into the upper chamber of the sand hopper above the normal level of the sand for purposes of sup.-

p'lying air thereto and to facilitate forcing sand through the dischargeor outlet 9, The numeral It designates a suitably-shaped air supply line or pipe, this being connected with the main line l2 adjacent the valve I3 and being provided with 'a-cut-ofi and control valve l5, A similar complemental and somewhat larger pipe l6 constitutes a by-ipass fora limited supply of air,- and this has: a so iated t erewith a cu f and esulating valve I'L The horizontal branch of the by-pass is connected with the sand discharge line by a su t le unio o coupli g 8,

:Reference being-had now to Figure 4, it will be observed; that theadapter device, the important 1 phase of the invention, is denoted, as'a'unit, by the numeral I 9. It is a hollow tapered casing having. a plug. 20 fitted'into its larger end, This plug serves to accommodate a reducing pipe 21 from the sand delivery pipe 22. An appropriate fitting 23 afiords a connection between the parts 2! and 22.

25. which serves to attach" a nipple 26 in place. The nipple serves to accommodate the discharge hose 21, which leads to the work (not shown). I now call attention to the means connecting the air line I4 to the adapter at a point outwardly of the sand pipe connection 2|. This means is in the form of a yoke 28 which, as shown in Figure 2, has suitably curved branches 29 with lateral bends 30 piercing diametrically opposite sides of the adapter, the inner terminals thereof being of L-shaped form to provide spaced parallel jets or air nozzles 3| (see Fig. 5) leading toward the discharge nipple. As seen in Figures 2 and 3, there is a valve l5a in this air line adjacent the yoke, and said yoke is also provided with an appropriate pressure gauge 32.

It is evident that the main air supply comes from a compressor and is fed into the device by way of the delivery line l2. The valve I3 serves to either regulate the flow or to cut it all", as desired. The valve I5 is the air supply to the sand reducer adapter device Hi, this controlling the air fed through the air pipe or line I4, and from the latter by way of the yoke 28 into the adapter. The valve |5a coacts with the valve l5, the two The opposite end,that is, the disv charge end of the adaptenis appropriately con.- 'structed,. as at 24, to accommodate a coupling :"Iclaim: r

valves being thought necessary, under certain circumstances, to obtain the desired regulation and adjustment. The valve l1 regulates the air supply into the sand hopper B and also into the bypass 16, which part is connected to the hopper and also to the adapter device.

By closing the valve 15, all air and sand go to said blast hose for heavy cleaning. By closing valve H, the flow of sand can be reduced for cleaning of fine materials or for very finework.

By closing the valve ll, the hose -21 can be used to blow away any sand left on the work, the air then coming through the line H, with the valve I open, and feeding through .theairnozzle. 3| into the adapter, and then into the 'h i. ne. ;f-:ni-?- v By regulating and adjusting the two valves l5 and I1, any amount of sand wanted in thei hose can be had, that is, from nosandrat all, andall. i

air to all the sand and air which can'be fed into connected with said sand discharge, a single valve air supply pipe connected by a valved connection I with said compressed air supply, lin and also connected at-itsoppositeend with said-adapter,

I by way of a yoke-like device having branches piercing and entering diametrically opposite sides the hose with both valves open. The adapter canfign thus be utilized as a mixing chamber for air and sand, the respective valves being regulated ac: cording to the discretion and experience of the operator in "order to ascertain the desired re-.

suits.- "It is not the'purpose here toattempt'to' cover every' phase of the operation, since Iam interested in the construction herein shown and described.

This mixing adapt er will mix an kinds of liquids includingsteam, air and sand, and miscellaneous tionas hereinafter claimed. Q

Minor changes in shape, size,material -and rearrangement of parts may be resorted to in actual practice so long as no departure is made from the invention as claimed 1.?.In a structu scribed a container constituting a sand-holding and deliveryhopper, a valved compressed air pipe connected" with said hopperto force sand therefrom, the hopper being provided at its lower end withza discharge for the sand, a by-pass pipe having a vertical branch connected with the compressed air pipe and having a horizontal branch of the adapter and terminating in nozzles to feed air inks-direction toward the discharge end of saidadapter.

I 2z hs a newarticle of manufacture, a mixing adapter for asand, blast structure of the class described comprising a tapered hollow shell having;;a.;hpse connected to one end, and a valved air and sand delivery pipe, connected to its. onposite end;together with a pair of parallel noz pesgconne'cted with saidnozzles; and a valvedair' supply line connected with-said branch ipe "In' scribed, a sand-containing andflelivery-hoppen a valved compressed air pipe" connected to the upperportion of said hopper to introduce air under pressure and force sand from the hoppen-the latter being provided at its bottom with a discharge for-said sanda by-pass' -pipe connecting and communicating with th compressed air'pipe at one ofits ends, theintermediate portion of said pipe being connected with said sand dischargega regulatingvalve also mounted in said compressed air pipe; this-forceaction with the by-pass to'permit'air to circulate through the main compressed air pipe into-the hopper and a predetermined portion to circulate around'and through theby-pas's,

ral assemblage of the class de- .a valved. connection with said compressed air sup and a re'ducing adapter shell provided witha sand discharge: and delivery hose,'the adjacent end of said .by-pass being tcon'nected with said adapter shell; a; direct air supply pipe connected by way of ply pipe and als'oiconnected with said adapter; and means connecting the last-named end of said directrair supplyw pipe embodying nozzles on the interior-of- =the*adapter shell to :feed air in a'direction toward the discharge end of said shell. l

he jinterior of, said adapten; external a structural assernl olage of the class de-g EDWIN C. BICK. 1 

